JPS5681180A - Treatment of waste color check liquid of steel material - Google Patents
Treatment of waste color check liquid of steel materialInfo
- Publication number
- JPS5681180A JPS5681180A JP15709479A JP15709479A JPS5681180A JP S5681180 A JPS5681180 A JP S5681180A JP 15709479 A JP15709479 A JP 15709479A JP 15709479 A JP15709479 A JP 15709479A JP S5681180 A JPS5681180 A JP S5681180A
- Authority
- JP
- Japan
- Prior art keywords
- component
- precipitate
- color check
- treatment
- waste
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To reduce a coloring component, COD, an oil component to a draining standard value or less by a method wherein a metal ion is added to the waste liquid and, thereafter, the pH thereof is adjusted to almost 7 by a caustic alkali to remove a generated precipitate and, moreover, the filtrate thereof is treated by activated carbon.
CONSTITUTION: To the waste color check liquid, a metal salt solution for forming a precipitate in a pH range of a draining standard, for example, an iron salt solution is added and the pH thereof is adjusted to almost 7 by a caustic alkali to coprecipitate the coloring component, the COD component and the oil component in the waste liquid. Subsequently, the filtrate obtained by removing the precipitate is treated by the activated carbon to adsorb a small amount of the residual aforementioned impurities to reduce said impurities moreover.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15709479A JPS5681180A (en) | 1979-12-04 | 1979-12-04 | Treatment of waste color check liquid of steel material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15709479A JPS5681180A (en) | 1979-12-04 | 1979-12-04 | Treatment of waste color check liquid of steel material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5681180A true JPS5681180A (en) | 1981-07-02 |
Family
ID=15642110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15709479A Pending JPS5681180A (en) | 1979-12-04 | 1979-12-04 | Treatment of waste color check liquid of steel material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5681180A (en) |
-
1979
- 1979-12-04 JP JP15709479A patent/JPS5681180A/en active Pending
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